Results 1 to 4 of 4
Like Tree2Thanks
  • 1 Post By richard1234
  • 1 Post By richard1234

Math Help - Year 1 Stat problem

  1. #1
    Newbie
    Joined
    Sep 2012
    From
    Toronto
    Posts
    2

    Year 1 Stat problem

    Hello, I am not a math person but however the Stat course is compulsory for my program. I am trying my best but cannot figure this question. I will find a tutor in this week, but before that, please help me figure this out as my first test is coming in these days.

    Suppose a distribution has a mean of 18 and a standard deviation of 4 and you transform this distribution to one that has a mean of 100 and a standard deviation of 10. What raw score in the original distribution corresponds to a transformed score of 115?

    Thank you everyone for your help.
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Super Member
    Joined
    Jun 2012
    From
    AZ
    Posts
    616
    Thanks
    97

    Re: Year 1 Stat problem

    The transformed score of 115 is 1.5 standard deviations above the mean.

    What score in the original distribution corresponds to this z-score?
    Thanks from toby22
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Newbie
    Joined
    Sep 2012
    From
    Toronto
    Posts
    2

    Re: Year 1 Stat problem

    so I get

    x = 18 + (1.5 X 4)

    = 24

    am I correct?

    Thanks a lot
    Follow Math Help Forum on Facebook and Google+

  4. #4
    Super Member
    Joined
    Jun 2012
    From
    AZ
    Posts
    616
    Thanks
    97

    Re: Year 1 Stat problem

    Quote Originally Posted by toby22 View Post
    so I get

    x = 18 + (1.5 X 4)

    = 24

    am I correct?

    Thanks a lot
    That's what I got.
    Thanks from toby22
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 2
    Last Post: February 3rd 2013, 07:48 AM
  2. Replies: 3
    Last Post: November 12th 2011, 11:57 AM
  3. Replies: 2
    Last Post: August 2nd 2011, 12:13 AM
  4. density for order stat, sufficient stat, MLE question
    Posted in the Advanced Statistics Forum
    Replies: 13
    Last Post: March 14th 2011, 01:50 AM
  5. Convert Annuity from 5 year periods to 1 year
    Posted in the Business Math Forum
    Replies: 0
    Last Post: March 29th 2010, 09:25 PM

Search Tags


/mathhelpforum @mathhelpforum